@wonder91,
Don't wait for cues from your body. Set up a regular routine schedule for your two meals, say one at 8 am and another at 4 pm every day. Every day at those times, you will eat something, even if it is just a small quantity, regardless of what cues you are getting from your body. For your morning meal, get some packets of instant oatmeal and fix one each day for your breakfast. For your evening meal, get some slices of ham, turkey or beef from the grocery store and wrap a slice around a small chunk of cheese or hard boiled egg.
After a while add in one snack time at noon, and a week or so later, add in a second snack time at 8 pm. Those snacks don't need to be anything more than half an orange, a banana or a small bag of peanuts.
Your meals and snacks should be large enough to give your metabolism something to fuel your body with so it isn't damaging your heart muscle and other body muscles by robbing them to feed itself.
If some days you really don't feel like eating a meal, cut it in half and eat only half of it. Eat the other half at one of your scheduled snack times.